Headlight Semi Sealed Housing 5 3/4" Inch Round With Park Bulb Pair. Accepts P43t H4 bulb. Comes as a pair two semi sealed fixtures. The fixture is DOT certified. Has parking light T10 harness for T10 wedge. H4 bulb not included. Great for vintage classic cars, trucks, motorcycles to upgrade that old bulb to a new led bulb with a semi sealed fixture. Compatible with sealed beams H5001, 5001, 4001, 4004, H5010, H5501, H4001, GE 4013. CE and Rohs.